hikaru2001
Topic Author
Posts: 38
Joined: 18 Feb 2019, 04:13

Read the input status of virtual ModbusRTU in Node Red

06 Apr 2021, 10:42

Hello friend,

I want to read out the input words of virtual ModbusRTU Master module in Node Red. However I have no good solution. Do you have some idea? Thank you!
 
->Johannes<-
KUNBUS
Posts: 128
Joined: 13 Jan 2021, 11:01

Re: Read the input status of virtual ModbusRTU in Node Red

08 Apr 2021, 08:54

Hi hikaru,

have look at Help Read Data Gateway Profinet Please!

At the last post you should replace "RevPiLED" with your word variable, e.g. "Input_Word_1"

Best regards
Johannes
 
hikaru2001
Topic Author
Posts: 38
Joined: 18 Feb 2019, 04:13

Re: Read the input status of virtual ModbusRTU in Node Red

09 Apr 2021, 04:33

Hi Johannes,

Thank you!
Your method works, but the return type is string in Node-red. Additionally I use function node(msg.payload = Number(msg.payload); return msg;) to convert the string value into number value, then the value can be calculated later.
 
jgerlach-erminas
Official 3rd Party Support Erminas
Posts: 33
Joined: 22 Jan 2020, 14:31

Re: Read the input status of virtual ModbusRTU in Node Red

13 Apr 2021, 10:18

Hello hikaru,

custom/manual return types is a already feature request, you can follow future progress here https://github.com/erminas/node-red-con ... /issues/13

Greetings,
Jonas

Who is online

Users browsing this forum: No registered users and 1 guest